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115 lines
3.1 KiB
Groff
115 lines
3.1 KiB
Groff
.\" Copyright (c) 1991 Free Software Foundation
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.\" See section COPYING for conditions for redistribution
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.TH c++filt 1 "June 1993" "cygnus support" "GNU Development Tools"
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.de BP
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.sp
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.ti \-.2i
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\(**
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..
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.SH NAME
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c++filt \- demangle C++ symbols
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.SH SYNOPSIS
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.hy 0
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.na
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.TP
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.B c++filt
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.RB "[\|" \-_ | \-\-strip-underscores "\|]"
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.RB "[\|" "\-s {gnu,lucid,arm} " | " \-\-format={gnu,lucid,arm}" "\|]"
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.RB "[\|" \-\-help "\|]"
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.RB "[\|" \-\-version "\|]"
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.RB "[\|" symbol "...\|]"
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.SH DESCRIPTION
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The C++ language provides function overloading, which means that you can
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write many functions with the same name (providing each takes parameters
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of different types). All C++ function names are encoded into a
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low-level assembly label (this process is known as
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.I mangling\c
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). The
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.B c++filt
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program does the inverse mapping: it decodes (\fIdemangles\fR)
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low-level names into user-level names so that the linker can keep
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these overloaded functions from clashing.
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.PP
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Every alphanumeric word (consisting of letters, digits, underscores,
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dollars, or periods) seen in the input is a potential label. If the
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label decodes into a C++ name, the C++ name replaces the low-level
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name in the output.
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.PP
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You can use
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.B c++filt
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to decipher individual symbols by specifying these symbols on the
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command line.
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.PP
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If no
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.B symbol
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arguments are given,
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.B c++filt
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reads symbol names from the standard input and writes the demangled
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names to the standard output. All results are printed on the standard
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output.
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.SH OPTIONS
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.TP
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.B \-_
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.TP
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.B \-\-strip\-underscores
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On some systems, both the C and C++ compilers put an
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underscore in front of every name. For example, the C name
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.B foo
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gets the low-level name
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.BR _foo .
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This option removes the leading underscore.
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.TP
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.B "\-s {gnu,lucid,arm}"
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.TP
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.B \-\-format={gnu,lucid,arm}
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GNU
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.B nm
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can decode three different methods of mangling, used by different C++
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compilers. This option selects which method it uses: the one used by
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the GNU compiler, the one used by the Lucid compiler, or the one
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specified by the C++ Annotated Reference Manual. The default is the
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GNU style.
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.TP
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.B \-\-help
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Print a summary of the options to
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.B c++filt
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and exit.
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.TP
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.B \-\-version
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Print the version number of
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.B c++filt
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and exit.
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.SH "SEE ALSO"
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.RB "`\|" binutils "\|'"
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entry in
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.B
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info\c
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\&;
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.I
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The GNU Binary Utilities\c
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\&, Roland H. Pesch (June 1993).
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.SH COPYING
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Copyright (c) 1993 Free Software Foundation, Inc.
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.PP
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Permission is granted to make and distribute verbatim copies of
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this manual provided the copyright notice and this permission notice
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are preserved on all copies.
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.PP
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Permission is granted to copy and distribute modified versions of this
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manual under the conditions for verbatim copying, provided that the
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entire resulting derived work is distributed under the terms of a
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permission notice identical to this one.
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.PP
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Permission is granted to copy and distribute translations of this
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manual into another language, under the above conditions for modified
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versions, except that this permission notice may be included in
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translations approved by the Free Software Foundation instead of in
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the original English.
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